This section is from the "May I Answer That?" book, by Sri Swami Sivananda. Also available from Amazon: May I Answer That?
The eye cannot perceive itself. A man cannot stand on his own shoulders. Even so, all enquiry into the Ultimate Cause, the causeless Cause of all creation, is first confronted with a formidable wall of primordial ignorance. He who annihilates his ego to nothing at this point, and who thus obtains the grace of Isvara, gets through this wall and enters the Kingdom of the Infinite. Then he knows. But this knowledge cannot be communicated to others, as this great wall is obstructing others from perceiving the Truth. Therefore the ancient sage termed it an Ati-prasna or transcendental question.
Suffice it to know that God has created this world in order to enable you to evolve and realize the Self, in order to serve all and love all as His manifestations. The dacoit of ignorance has kidnapped man from his palace of Self-awareness and brought him to a thick forest; when the man wakes up, he does not brood over how he came there, but tries to get out of the forest. Even so, the earnest Sadhak tries to break the chain of transmigration by attaining Self-realization.
Karma is likened to the wheel. It has to work out; because the force that set it in motion has to be spent. It is a cycle of action and reaction. Just as the arrow once discharged from the bow cannot be withdrawn, even if the hunter feels that he has aimed at a wrong target, Prarabdha Karma, the fruit of those Karmas performed in previous births that have come up for experience in this present birth, cannot be annulled.
How then does God help His devotee? The all-merciful God does help His devotee by strengthening his will-power, his power of endurance, to bear the Karma-Phala with a cheerful countenance. The devotee is certainly not left to the mercy of his Purva Karma; he is beautifully clothed in the protective shield of His grace. Just as in the worst winter and violent storm, you remain unaffected in your own house and in your warm clothing, the devotee (though to the onlookers he is poor, sick or suffering) does not feel that he is suffering at all and is ever happy and blissful in His remembrance.
Karma does not compel a man to do wrong actions. Samskara does, to a certain extent. But God has bestowed free will on man, with which to make or mar his career. Man has no Bhoga-Svatantrata or the freedom to enjoy or suffer, which factor is governed by Karma. But, he has got Karma-Svatantrata or freedom to do good or evil. He can substitute good Samskaras in place of the old vicious Samskaras by Vichara-sakti, will-power and continued practice of good actions.
That evil seems to give immediate happiness is the greatest temptation and the greatest obstacle to the cultivation of virtues; and it can be removed only by discrimination and experience. Contemplation over the ultimate and permanent damage done to the very soul of man by the evil actions, and the harm he is causing to the entire society itself by his evil, ought to compel a man to desist from evil action however pleasant it might appear superficially. There is no short-cut to this really serious problem; the wicked heart will not yield easily. And therefore our ancients have exalted Satsang. Constant association with the wise and spiritually evolved persons alone can remove these wrong notions from the mind of the wicked one.
 
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